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Interview Questions
Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.
- 9403
- Questions
- 546
- Companies
- 11
- Topics
- 8
- Languages
Showing 391–420 of 781 results
- KneronMediumSoftware EngineerOptimize machines for distributed merging cost
Optimize machines for distributed merging cost evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignOnline Assessment - LumenMediumData AnalystHow would you handle common analyst workplace scenarios?
This question evaluates prioritization, stakeholder management, written and executive communication, ownership, collaboration, and inclusive teamwork competencies for a Data Analyst within a Behavioral & Leadership context.
Behavioral & LeadershipOnline Assessment - LyftMediumSoftware EngineerAssign Minimum Workers to Jobs
This problem tests your ability to manage overlapping intervals and greedy resource allocation using minute-based time arithmetic.
Coding & AlgorithmsOnline AssessmentSweep-lineIntervalsGreedy - MathWorksMediumSoftware EngineerCalculate cost from orders with SQL
This question evaluates a candidate's ability to perform SQL data manipulation and business-rule calculations, including conditional joins, date-range filtering, and numeric arithmetic for discounts and taxes.
Data Manipulation (SQL/Python)Online Assessment - MathWorksMediumSoftware EngineerCalculate tiered cost and break-even
This question evaluates the ability to model tiered piecewise cost functions, compute total and average unit costs, and perform break-even analysis using basic algebra and arithmetic.
Statistics & MathOnline Assessment - MathWorksMediumSoftware EngineerCompute intersections for each segment
This question evaluates algorithmic problem-solving, interval reasoning, and complexity-analysis skills by requiring an efficient method to count how many other segments intersect each interval while accounting for edge cases like equal endpoints and duplicate segments.
Coding & AlgorithmsOnline Assessment - MathWorksEasySoftware EngineerCompute probability of drawing reds
This question evaluates understanding of probability theory and combinatorics, specifically reasoning about sampling without replacement and calculating event probabilities using counting methods.
Statistics & MathOnline Assessment - MathWorksEasySoftware EngineerCompute urn-draw probabilities and expectations
This question evaluates understanding of elementary probability concepts—dependent events, conditional probability, and expected value—using an urn model with draws without replacement.
Statistics & MathOnline Assessment - MathWorksMediumSoftware EngineerDecide transform via one-to-one mapping
This question evaluates understanding of character-to-character mappings in strings, modeling those mappings as directed graphs, detection and handling of cycles, and the ability to construct a sequence of replacements.
Coding & AlgorithmsOnline Assessment - MathWorksHardSoftware EngineerDeduce position from logic clues
This question evaluates the ability to model and reason about constraint-satisfaction on a 2D grid, including logical inference with directional and adjacency relations, combinatorial placement constraints, and determination of uniqueness.
Statistics & MathOnline Assessment - MathWorksEasySoftware EngineerDeduce row order from logic clues
This question evaluates logical deduction, constraint satisfaction, and basic combinatorial reasoning used to infer ordering from positional clues. Commonly asked to assess a candidate's ability to apply discrete math and spatial reasoning within the Statistics & Math domain, it targets conceptual understanding of constraints rather than practical implementation.
Statistics & MathOnline Assessment - MathWorksMediumSoftware EngineerDesign a multi-tenant course purchase and delivery system
This question tests the ability to design a scalable multi-tenant architecture that manages course content, user entitlements, and purchase workflows across different organizational silos.
System DesignOnline AssessmentMulti-tenancyAPI DesignScalability - MathWorksMediumSoftware EngineerDetermine string transform via end-append moves
This question evaluates a candidate's understanding of string manipulation, permutation feasibility, and algorithmic optimization for computing minimal move counts.
Coding & AlgorithmsOnline Assessment - MathWorksMediumSoftware EngineerFind shortest path using BFS
This question evaluates a candidate's proficiency with graph traversal algorithms—particularly breadth-first search—and the ability to model grid-based shortest-path problems while reasoning about time and space complexity.
Coding & AlgorithmsOnline Assessment - MathWorksMediumSoftware EngineerImplement BFS shortest paths with reconstruction
This question evaluates understanding of graph traversal via breadth-first search, computation of shortest paths in unweighted graphs, and path reconstruction using parent arrays, assessing algorithmic reasoning and implementation skills in the Coding & Algorithms domain.
Coding & AlgorithmsOnline Assessment - MathWorksMediumSoftware EngineerMaximize disjoint k-sum pairs
This question evaluates proficiency in array algorithms, pairing logic, data structure selection, and complexity analysis, focusing on maximizing disjoint k-sum pairs and reasoning about space–time trade-offs.
Coding & AlgorithmsOnline Assessment - MathWorksMediumSoftware EngineerMaximize operations by removing target-sum pairs
This question evaluates a candidate's ability to design and analyze efficient array algorithms and use appropriate data structures and techniques such as hash maps or sorting with two-pointer strategies, with attention to time and space complexity.
Coding & AlgorithmsOnline Assessment - Maven SecuritiesHardQuantitative TraderSolve Graduate Trader Probability Questions
This set evaluates quantitative reasoning and probabilistic thinking, testing competencies in combinatorics, probability, expectation, conditional probability, enumeration, and logical deduction.
Software Engineering FundamentalsOnline Assessment - MetaMediumSoftware EngineerDescribe proudest project and cross-team work
This question evaluates leadership, cross-team collaboration, ownership, and reflective learning by asking about a candidate's proudest project and a specific instance of working across teams, and it falls under the Behavioral & Leadership category within the software engineering domain.
Behavioral & LeadershipOnline Assessment - MetaMediumSoftware EngineerDescribe teamwork and stress handling
This interview question evaluates behavioral evidence, ownership, communication, trade-offs, and measurable outcomes in a realistic interview setting. A strong answer for Describe teamwork and stress handling states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Behavioral & LeadershipOnline Assessment - MetaMediumSoftware EngineerDesign a bank system with scheduled transfers
This question evaluates object-oriented design and stateful system skills, including time-ordered event processing, scheduling and cancellation semantics, balance accounting, and top-k aggregation using appropriate data structures.
Coding & AlgorithmsOnline Assessment - MetaHardSoftware EngineerDesign a basic bank system API
This question evaluates a candidate's ability to design and implement an in-memory banking API, focusing on data modeling, API semantics, invariants (such as monotonic timestamps and non-negative balances), idempotency, and basic concurrency control.
System DesignOnline Assessment - MetaMediumSoftware EngineerDesign a fitness tracking app
This problem tests your ability to design a scalable backend for a fitness tracking application, focusing on high-frequency sensor data ingestion, geospatial route storage, and efficient retrieval of historical user activities.
System DesignOnline AssessmentScalabilityGeospatialNoSQL - MetaMediumSoftware EngineerDesign an in-memory cloud file system
This question evaluates understanding of object-oriented design, stateful data structures, and resource management including user quotas, ownership semantics, and file metadata operations.
Coding & AlgorithmsOnline Assessment - MetaHardSoftware EngineerDesign an in-memory cloud storage system
This question tests your ability to design a high-performance, in-memory distributed metadata store that supports hierarchical file structures, quota management, and efficient retrieval of top-k largest files.
System DesignOnline AssessmentData StructuresConcurrencyTrie - MetaMediumSoftware EngineerDesign an in-memory database with TTL and history
This question evaluates understanding of time-versioned in-memory key–field–value stores, covering TTL-based expiration, historical reads, atomic compare-and-set/delete semantics, efficient scan/scan-by-prefix operations, and time/space complexity analysis, and it belongs to the Coding & Algorithms domain.
Coding & AlgorithmsOnline Assessment - MetaMediumSoftware EngineerExtend cloud file system with copy and compression
This question evaluates understanding of data structures and algorithms for stateful resource management, covering bookkeeping of per-user quotas, file metadata operations (copy, compress/decompress), string filtering and sorting, and efficient selection and deletion of largest elements.
Coding & AlgorithmsOnline Assessment - MetaEasySoftware EngineerImplement Multi-Level In-Memory Services
This question evaluates a candidate's ability to design and implement mutable in-memory data structures and algorithms for stateful service simulations, covering account and file modeling, temporal operations with lazy expiration, ranking queries, merging entities, and capacity constraints.
Coding & AlgorithmsOnline Assessment - MetaHardSoftware EngineerImplement a Timestamped Banking System
This problem tests the ability to manage time-series data using efficient lookups and range queries, specifically requiring a balance between transactional updates and historical state retrieval.
Coding & AlgorithmsOnline AssessmentData StructuresBinary SearchTime-series - MetaMediumSoftware EngineerImplement a versioned in-memory DB with CAS and history
This question evaluates a candidate's ability to design and implement time-versioned in-memory data structures, conditional concurrency primitives (compare-and-set and compare-and-delete), TTL expiration semantics, and efficient historical reads.
Coding & AlgorithmsOnline Assessment
Lyft
MathWorks
Meta